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EP2012559A3 - LED traffic signal - Google Patents

LED traffic signal Download PDF

Info

Publication number
EP2012559A3
EP2012559A3 EP08159501.9A EP08159501A EP2012559A3 EP 2012559 A3 EP2012559 A3 EP 2012559A3 EP 08159501 A EP08159501 A EP 08159501A EP 2012559 A3 EP2012559 A3 EP 2012559A3
Authority
EP
European Patent Office
Prior art keywords
traffic signal
light source
power regulator
led traffic
traffic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP08159501.9A
Other languages
German (de)
French (fr)
Other versions
EP2012559A2 (en
Inventor
David D Miller
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens Industry Inc
Original Assignee
Siemens Industry Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens Industry Inc filed Critical Siemens Industry Inc
Publication of EP2012559A2 publication Critical patent/EP2012559A2/en
Publication of EP2012559A3 publication Critical patent/EP2012559A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/50—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits
    • H05B45/58—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits involving end of life detection of LEDs
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/10—Controlling the intensity of the light
    • H05B45/12—Controlling the intensity of the light using optical feedback
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/10—Controlling the intensity of the light
    • H05B45/18—Controlling the intensity of the light using temperature feedback
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/30—Driver circuits
    • H05B45/37—Converter circuits
    • H05B45/3725—Switched mode power supply [SMPS]
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/50—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits

Landscapes

  • Traffic Control Systems (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)

Abstract

A traffic signal is provided for controlling vehicular traffic. The traffic signal includes a light source (10) having a light emitting diode (LED) array (D1, D2, D3, D4). A power regulator (14) is associated with the light source and is constructed and arranged to control input current to the light source. A traffic signal controller (16) is remote from the light source and the power regulator. The traffic signal controller is constructed and arranged to provide an input voltage signal to the power regulator, with the input current being based on the input voltage signal.
EP08159501.9A 2007-07-05 2008-07-02 LED traffic signal Withdrawn EP2012559A3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US11/822,343 US7948398B2 (en) 2007-07-05 2007-07-05 LED traffic signal without power supply or control unit in signal head

Publications (2)

Publication Number Publication Date
EP2012559A2 EP2012559A2 (en) 2009-01-07
EP2012559A3 true EP2012559A3 (en) 2013-07-24

Family

ID=39884549

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08159501.9A Withdrawn EP2012559A3 (en) 2007-07-05 2008-07-02 LED traffic signal

Country Status (3)

Country Link
US (1) US7948398B2 (en)
EP (1) EP2012559A3 (en)
CN (1) CN101338870A (en)

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US9637147B2 (en) 2009-03-17 2017-05-02 General Electronic Company Data communication system and method
US8655517B2 (en) 2010-05-19 2014-02-18 General Electric Company Communication system and method for a rail vehicle consist
US8702043B2 (en) 2010-09-28 2014-04-22 General Electric Company Rail vehicle control communication system and method for communicating with a rail vehicle
US8798821B2 (en) 2009-03-17 2014-08-05 General Electric Company System and method for communicating data in a locomotive consist or other vehicle consist
US9379775B2 (en) 2009-03-17 2016-06-28 General Electric Company Data communication system and method
US8935022B2 (en) 2009-03-17 2015-01-13 General Electric Company Data communication system and method
US8532850B2 (en) * 2009-03-17 2013-09-10 General Electric Company System and method for communicating data in locomotive consist or other vehicle consist
US8825239B2 (en) 2010-05-19 2014-09-02 General Electric Company Communication system and method for a rail vehicle consist
US8237590B2 (en) * 2008-04-28 2012-08-07 GE Lighting Solutions, LLC Apparatus and method for reducing failures in traffic signals
US9326346B2 (en) 2009-01-13 2016-04-26 Terralux, Inc. Method and device for remote sensing and control of LED lights
US8358085B2 (en) 2009-01-13 2013-01-22 Terralux, Inc. Method and device for remote sensing and control of LED lights
US8583299B2 (en) * 2009-03-17 2013-11-12 General Electric Company System and method for communicating data in a train having one or more locomotive consists
WO2011032220A1 (en) * 2009-09-16 2011-03-24 Electronic Research Pty Ltd A led display system
CA2781077A1 (en) * 2009-11-17 2012-06-28 Terralux, Inc. Led power-supply detection and control
US8710995B2 (en) * 2010-05-20 2014-04-29 Rohm Co., Ltd. Lighting apparatus
EP2617266A1 (en) 2010-09-16 2013-07-24 Terralux, Inc. Communication with lighting units over a power bus
US9596738B2 (en) 2010-09-16 2017-03-14 Terralux, Inc. Communication with lighting units over a power bus
US9513630B2 (en) 2010-11-17 2016-12-06 General Electric Company Methods and systems for data communications
US10144440B2 (en) 2010-11-17 2018-12-04 General Electric Company Methods and systems for data communications
US8717194B2 (en) * 2010-12-21 2014-05-06 GE Lighting Solutions, LLC LED traffic signal compensation and protection methods
US9018850B2 (en) 2010-12-28 2015-04-28 GE Lighting Solutions, LLC Safety flashing detector for traffic lamps
CN102316023B (en) * 2011-07-11 2015-12-09 东南大学 Crossing traffic signal controlling machine and traffic control center's wireless communications method and device
US20140239809A1 (en) * 2011-08-18 2014-08-28 Lynk Labs, Inc. Devices and systems having ac led circuits and methods of driving the same
US9028096B2 (en) 2011-10-05 2015-05-12 Dialight Corporation Angled street light fixture
US8907568B2 (en) * 2011-10-24 2014-12-09 Microsemi Corporation Method and apparatus for LED string short circuit detection and protection
US8914170B2 (en) 2011-12-07 2014-12-16 General Electric Company System and method for communicating data in a vehicle system
US8896231B2 (en) 2011-12-16 2014-11-25 Terralux, Inc. Systems and methods of applying bleed circuits in LED lamps
NL2009458C2 (en) 2012-09-13 2014-03-18 Eldolab Holding Bv Led fixture and led lighting arrangement comprising such led fixture.
CN103065475B (en) * 2012-12-17 2015-01-28 山西省自动化研究所 Traffic signal wireless transmission system based on windows image acquisition (WIA)
US9265119B2 (en) 2013-06-17 2016-02-16 Terralux, Inc. Systems and methods for providing thermal fold-back to LED lights
US9907148B2 (en) 2014-03-10 2018-02-27 Dynotron, Inc. LED lighting system having at least one heat sink and a power adjustment module for modifying current flowing through the LEDs
US9204524B2 (en) * 2014-03-10 2015-12-01 Dynotron, Inc. Variable lumen output and color spectrum for LED lighting
US9349288B2 (en) 2014-07-28 2016-05-24 Econolite Group, Inc. Self-configuring traffic signal controller
US9549449B2 (en) * 2015-01-30 2017-01-17 Advanced Optoelectronic Technology, Inc. Fault detection apparatus and fault detection method thereof
US10917953B2 (en) * 2016-03-21 2021-02-09 X Display Company Technology Limited Electrically parallel fused LEDs
US9953527B1 (en) * 2017-02-21 2018-04-24 Rayan Alhazmi Intersection communication systems and methods
CN110969868B (en) * 2019-11-28 2021-03-02 中冶京诚工程技术有限公司 Control method, device and system of traffic signal lamp
CN113538930A (en) * 2020-04-15 2021-10-22 华为技术有限公司 Traffic signal control method, related equipment and system

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19732828A1 (en) * 1997-07-30 1999-02-04 Siemens Ag PWM address circuit for light-emitting diode array
EP0896899A2 (en) * 1997-08-12 1999-02-17 Reitter & Schefenacker GmbH & Co. KG Vehicle lights
US6236331B1 (en) * 1998-02-20 2001-05-22 Newled Technologies Inc. LED traffic light intensity controller
DE10025821A1 (en) * 2000-05-25 2002-07-25 Sickinger Monika LED light source

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* Cited by examiner, † Cited by third party
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JPS5517180A (en) * 1978-07-24 1980-02-06 Handotai Kenkyu Shinkokai Light emitting diode display
US6567171B1 (en) * 2000-04-03 2003-05-20 Rushing Allen J Digital densitometer with controlled light emitter
US6614358B1 (en) * 2000-08-29 2003-09-02 Power Signal Technologies, Inc. Solid state light with controlled light output
US20050063182A1 (en) 2003-09-23 2005-03-24 Siemens Energy & Automation, Inc. Method and apparatus for light emitting diode traffic signal
US20050243556A1 (en) * 2004-04-30 2005-11-03 Manuel Lynch Lighting system and method
US7301447B2 (en) * 2005-04-13 2007-11-27 Gm Global Technology Operations, Inc. LED turn signal and error detecting method
WO2006121939A2 (en) * 2005-05-09 2006-11-16 Sean Xiaolu Wang Optical signaling apparatus with precise beam control
US7376983B1 (en) * 2007-07-02 2008-05-27 Leonard Sciarrino Debris catch system for food preparation drains and other applications

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19732828A1 (en) * 1997-07-30 1999-02-04 Siemens Ag PWM address circuit for light-emitting diode array
EP0896899A2 (en) * 1997-08-12 1999-02-17 Reitter & Schefenacker GmbH & Co. KG Vehicle lights
US6236331B1 (en) * 1998-02-20 2001-05-22 Newled Technologies Inc. LED traffic light intensity controller
DE10025821A1 (en) * 2000-05-25 2002-07-25 Sickinger Monika LED light source

Also Published As

Publication number Publication date
CN101338870A (en) 2009-01-07
EP2012559A2 (en) 2009-01-07
US20090009362A1 (en) 2009-01-08
US7948398B2 (en) 2011-05-24

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